Wikipedia:Selected anniversaries/April 21
April 21: Holy and Great Friday in Eastern Christianity (2006), Tiradentes Day in Brazil.
- 753 BC - Romulus and Remus founded Rome, according to the calculations by Varro Reatinus.
- 1836 - Texan forces led by Sam Houston (pictured) defeated General Antonio López de Santa Anna and his Mexican troops in the Battle of San Jacinto, the decisive battle in the Texas Revolution.
- 1960 - Brasília, a planned city based on principles of Le Corbusier, was officially inaugurated as the capital of Brazil.
- 1966 - Emperor Haile Selassie I of Ethiopia visited Jamaica and was greeted by more than a hundred thousand Rastafarians.
- 1970 - The Hutt River Province Principality "seceded" from Australia.